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    • Techniques and results 

      Mudholkar, A.V.; Pattan, J.N.; Sudhakar, M. (New Delhi: Department of Ocean Development, 1988)
      An area of about 300,000 sq km in the Central Indian Ocean Basin (CIOB) was demarcated to estimate the abundance, grade and reserves of the nodules This area was further demarcated into two regions of 150,000 sq km each A ...